Digestive Diseases Glossary of Terms
The Alimentary Canal The alimentary canal, or digestive tract, is where food travels and is broken down and absorbed. It is made up of the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus. The wall of the alimentary canal consists of four layers, although their characteristics may vary from one organ to another. The innermost lining of the alimentary canal is the mucous membrane, or mucosa. It is a protective layer that may have invaginations that are used for the secretion of mucus and enzymes. Some areas of the mucosa have projections or folds that increase the surface area of the canal for better absorption.
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Gastrinomas secrete the hormone gastrin. Gastroesophageal reflux: A condition in which stomach acid and contents back up into the esophagus, producing symptoms of heartburn or regurgitation. Gastroparesis: Paralysis of the stomach. It is a disease in which the stomach cannot empty itself of food in a normal fashion.
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The Digestive System
Sign in Sign in to YouTube Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to dislike Bozeman Science’s video. Add to Sign in to YouTube Sign in with your Google Account (YouTube, Google+, Gmail, Orkut, Picasa, or Chrome) to add Bozeman Science’s video to your playlist. He then details all of the major parts within the human digestive system. This tour starts in the mouth, move down the esophagus, through the stomach, small investing, colon and rectum. He explains how all of the major macromolecules are digested and absorbed by the body.
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Digestive System Tee Shirt Science Activity
First, place newspaper inside the shirt so the shirt lays flat but the markers will not bleed through to the other side. Next, students should carefully draw over their sketching and color in each organ. Students should also add a label to identify each organ. Remind students to be careful throughout this stage since the coloring cannot be removed. Science Activity Assessment Creating a digestive system tee shirt is an activity that can be assessed with a variety of methods. Self assessments and peer assessments allow students to examine how well they did both to their own standards and by evaluating each other’s work.
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